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Wiring diagram - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS
Components - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS
| Component code | Description | Reference to the assembly |
| B1 | JUNCTION UNIT | - |
| B1 | JUNCTION UNIT | |
| B1 | JUNCTION UNIT | |
| B2 | JUNCTION UNIT UNDER DASHBOARD | |
| B99 | MAXIFUSE BOX ON BATTERY | |
| C10 | FRONT LEFT EARTH ( FRONT ) | - |
| C11 | RIGHT FRONT EARTH ( FRONT ) | - |
| C15 | FACIA EARTH, DRIVER''S SIDE | - |
| D1 | FRONT DASHBOARD COUPLING ( FRONT ) | - |
| D6 | REAR / ENGINE COMPARTMENT JUNCTION | - |
| D43 | DASHBOARD/CENTRE CONSOLE COUPLING | - |
| D47 | CLOCK SPRING ON STEERING WHEEL | |
| D49 | PEDAL ASSEMBLY JOIN | - |
| D79 | TRANSMISSION SENSOR JUNCTION | - |
| D97 | SHORT CIRCUITING COUPLING | - |
| E47 | SELESPEED GEARBOX BUZZER | - |
| E50 | INSTRUMENT PANEL | |
| H1 | IGNITION SWITCH | |
| Interruttore Sport | Sport switch | - |
| H37 | GEAR CONTROLS | 2127A |
| H39 | CITY SWITCH ( CONNECTORS ) | - |
| I30 | BRAKE PEDAL SWITCH ( FRONT ) | |
| J87 | SELESPEED GEARBOX RELAY ( FRONT ) | - |
| K58 | STEERING SENSOR ( FRONT ) | |
| K68 | SPEED SELECTION POTENTIOMETER ( CONNECTORS ) | 2127E |
| K69 | GEAR SHIFT POTENTIOMETER | 2127E |
| K77 | TRANSMISSION INPUT SPEED SENSOR ( CONNECTORS ) | 2127E |
| K95 | CLUTCH POSITION POTENTIOMETER ( CONNECTORS ) | 2127E |
| K96 | PRESSURE SENSOR ON TRANSMISSION ( CONNECTORS ) | 2127E |
| L51 | SOLENOID 1 GEAR ENGAGEMENT ( CONNECTORS ) | 2127C |
| L52 | SOLENOID 2 GEAR ENGAGEMENT ( CONNECTORS ) | 2127C |
| L53 | SOLENOID 3 GEAR ENGAGEMENT ( CONNECTORS ) | 2127C |
| L54 | SOLENOID 4 GEAR ENGAGEMENT ( CONNECTORS ) | 2127C |
| L56 | CLUTCH CONTROL SOLENOID | 2127C |
| M1 | BODY COMPUTER | |
| M10 | ENGINE MANAGEMENT ECU | 1056B |
| M54 | SELESPEED TRANSMISSION CONTROL UNIT | 2127E |
| N47 | SELESPEED GEARBOX ELECTRIC PUMP ( FRONT ) | 2127C |
Component location - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS
Components - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS
| Component code | Description | Reference to the assembly |
| B1 | JUNCTION UNIT | - |
| B1 | JUNCTION UNIT | |
| B1 | JUNCTION UNIT | |
| B2 | JUNCTION UNIT UNDER DASHBOARD | |
| B99 | MAXIFUSE BOX ON BATTERY | |
| C10 | FRONT LEFT EARTH ( FRONT ) | - |
| C11 | RIGHT FRONT EARTH ( FRONT ) | - |
| C15 | FACIA EARTH, DRIVER''S SIDE | - |
| D1 | FRONT DASHBOARD COUPLING ( FRONT ) | - |
| D6 | REAR / ENGINE COMPARTMENT JUNCTION | - |
| D43 | DASHBOARD/CENTRE CONSOLE COUPLING | - |
| D47 | CLOCK SPRING ON STEERING WHEEL | |
| D49 | PEDAL ASSEMBLY JOIN | - |
| D79 | TRANSMISSION SENSOR JUNCTION | - |
| D97 | SHORT CIRCUITING COUPLING | - |
| E47 | SELESPEED GEARBOX BUZZER | - |
| E50 | INSTRUMENT PANEL | |
| H1 | IGNITION SWITCH | |
| Interruttore Sport | Sport switch | - |
| H37 | GEAR CONTROLS | 2127A |
| H39 | CITY SWITCH ( CONNECTORS ) | - |
| I30 | BRAKE PEDAL SWITCH ( FRONT ) | |
| J87 | SELESPEED GEARBOX RELAY ( FRONT ) | - |
| K58 | STEERING SENSOR ( FRONT ) | |
| K68 | SPEED SELECTION POTENTIOMETER ( CONNECTORS ) | 2127E |
| K69 | GEAR SHIFT POTENTIOMETER | 2127E |
| K77 | TRANSMISSION INPUT SPEED SENSOR ( CONNECTORS ) | 2127E |
| K95 | CLUTCH POSITION POTENTIOMETER ( CONNECTORS ) | 2127E |
| K96 | PRESSURE SENSOR ON TRANSMISSION ( CONNECTORS ) | 2127E |
| L51 | SOLENOID 1 GEAR ENGAGEMENT ( CONNECTORS ) | 2127C |
| L52 | SOLENOID 2 GEAR ENGAGEMENT ( CONNECTORS ) | 2127C |
| L53 | SOLENOID 3 GEAR ENGAGEMENT ( CONNECTORS ) | 2127C |
| L54 | SOLENOID 4 GEAR ENGAGEMENT ( CONNECTORS ) | 2127C |
| L56 | CLUTCH CONTROL SOLENOID | 2127C |
| M1 | BODY COMPUTER | |
| M10 | ENGINE MANAGEMENT ECU | 1056B |
| M54 | SELESPEED TRANSMISSION CONTROL UNIT | 2127E |
| N47 | SELESPEED GEARBOX ELECTRIC PUMP ( FRONT ) | 2127C |
Description - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS
A control system known as SELESPEED supervises and regulates the operation of the manual gearbox by means of an electrohydraulic device.An electronic control unit manages a complex operating logic that allows the gearbox to be used in both "semiautomatic" conditions and in an automatic mode that delegates the management of gear changes to an electronic system.The electronic control unit converses with the engine management control unit via the CAN and two dedicated lines, one for the engine rpm signal, one for the fault diagnosis.The control unit operates an electro-hydraulic unit located on the gearbox, via a special electric pump, according to a complex operating logic.For more details, 2127 COMANDI EST.CAMBIO SELEZ. ELETTROIDRAULICA.The power supply lines for the control unit and the various system components (sensors and actuators) are protected by two fuses located in the junction unit under the dashboard.A special maxifuse in the engine compartment junction unit supplies the line for the system control pump.The autodiagnosis of the control unit indicates the source of these faults by turning on an instrument panel warning light. The SELESPEED control unit also sends the instrument panel information concerning the gear engaged which is shown in the display. For more details, 2127 COMANDI EST.CAMBIO SELEZ. ELETTROIDRAULICA.
Operational description - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS
The SELESPEED control unit M54controls and regulatesthe entire gearbox management systemThe direct power supply for the control unit arrives from the batatery, via the line for the CPL maxifuse located on the battery (connector B99 B) and is protected by fuse F32 of the junction unit under the dashboard B2, at pin 27 of connector A of M54.The ignition-operated supply (15/54) reaches pin 28 of connector A of M54..Pins 1 and 2 of connector A of M54are earthed.A group of sensors and potentiometerson the gearbox inform the control unit which gear is engaged, the potentiometers are supplied from pin 73 of connector B; pin 66 provides the reference earth for the gear selector potentiometer K68returns a signal to pin 51 of connector A; the gear engagement potentiometer K69returns a signal to pin 39 of connector A; the oil pressure sensor for the hydraulic unit K96returns a signal to pin 40 of connector A.The clutch position potentiometer K95is supplied by pin 79 of connector B, receives a reference earth from pin 59, returns a signal to pin 52 of connector A of M54.Pins 38 and 50 of connector A M54are connected to the vehicle speed sensor (gearbox output) K77.The gear control assembly H37is connected to control unit M54to signal the gear engagement request: these signals are sent from connector A of H37to pins 67, 74, 68 of connector B of M54; and to pin 26 of connector A; the reference earth is received from pin 66 of connector B.Connector B of H37supplies the LED that lights up the actual panel, switched on by the line (INT) protected by fuse F51 of the junction unit under the dashboard B2.The button for selecting the CITY operating mode H39is located to the left of the gear selector lever andis connected to control unit M54at pin 77 of connector B: the control is lit up by the line (INT) protected by fuse F51 of the junction unit under the dashboard B2The button for selecting the SPORT logic H32 is located to the right of the gear selector lever and is connected to the control unit M54 at pin 71 of connector B: the control is lit up by the line (INT) protected by fuse F51 of the junction unit under the dashboard B2.The controls on the steering wheel connected via the clock spring D47, send signals to pin 75 of connector B of M54; the reference earth is received from pin 66 of connector B.Pin 69 of connector B of M54receives the signal coming from the brake lights switch I30, with an ignition-controlled power supply (INT) from fuse F37 of the junction unit under the dashboard B2.On the basis of the operating logic the control unit controls the electro-hydraulic unit located in the gearbox which produces the gear changes: pin 31 of connector A controls the electric pump N47which pressurizes the fluid in the hydraulic unit.The pump N47is controlled by a special relay J87(supplied by the line for fuse F3 of the engine compartment junction unit B1.
